Pulp-machine.



W. H. JUDSON. PULBMAGHNE.

APPLIGATIQN FILED AFR. 1a, 1911A Pai-med Jan. 30, m2.

5 SHEBTS-SHEET 2,

H. JUDSUN. ULP MAHNH APPLIGATIQN FILED PE1 14e, 1911.

Patented ma 3G, 3,912.

5 SHEETS-SHEBT 8.

@e WAI.- E R HUDSON 5 SHEETS-SHEET 4.

WALTER H JUDSCN W H. J'UDSON.

PULP MCIN.

APPLEGATION FILED APR. 13. 1911.

Patented Jan. 30, 1922.

5 SHEETS-SHEET 5.

ila/W1 Uran srArEs lPATENT omnes.

-WAL'rnnn Simson, or OAKLAND, oAnIronNIA AssrGNon-ro Jnssn D. mon, or

OAKLAND, oAmronmA.

:EUR4-MACHINE.

specification of Letters raam.

Patented Jan. so, 1912.

Application filed April 13, 1911. Serial No. 620,811.

State of California, have invented cert-ainv new and usefulImprovementsin Pulp-Machinos, of whichthe following is a speciiica- Thisinvention relates to the subject Iof pulp making, and the principalobject of the same is to provide a simple and easily operated pulpmaking machine in which the pulp material is rapidly digested and de- Ymotor 24 is carried by platform 18 and has livered to a press, and fromthe press delivered to a disintegrator from which the pulp is dischargedto the usual beater, said digesi ter, press and disintegrator beingcarried by i' a common support and operated by a .com-

mon source of power.

Inladdition to the foregoing prominent features, the inventioncontemplates novel fr means whereby the liquid employed is; drained fromthe digester and ypress and. l subjected to an evaporating operation tore- I move the water therefrom, the valuable:

chemicals being conducted to a suitable retort.

The invention also contemplates novel means yfor heating the digesterand evaporator, and treating the pulp to a water bath while inthe press,and numerous other details of construction and arrangement of.

parts, as will be fully described. Y

One preferred and practical embodiment of the invention vis shown in theaccompanying drawings, wherein :H

Figure 1 is a View in elevation, partly in vertical section of theimproved pulp making machine. Fig. 2 lis an enlarged centralverticaLsectional view of the digester. Fig.

3 is a top plan View, partly in section, there-.

perspective view of the bottom of the press. The improved pulp makingmachine has.

been shown mounted upon a supporting frame including the base 15,standards 16 and the three platforms 17, 18 and 19, re-

Platform 17 is arranged .above platform-18, and plat-formy 19 isarranged .intermediate of and to one side of platforms 17 and 18, thisbeing a convenient structure,

`but it will Vbe clear that other arrangements may be resorted to, ifdesired. An evaporating receptacle 20 is carried by base 15 aireceivingtank 21 is carried by platform 18;

a digester 22 is carried by platform 17; and

a press 23 is carried by .platform 19. A

a belt connection 25 with a drive shaft 26 that is horizontallyjournaled in suitable bearings and extends above platforms 18 and 19,and'below platform 17. y

A vertical flue 27 extends from the lower portion of one 'end ofevaporator 20, said flue being provided with batlie plates 28 that arearranged in staggered relation. A sinuous casing 29 is arranged in saidevaporator and a plurality of endless iight conveyers 30 are arrangedinsaid casing. The conveyers are driven by power taken from a verticalshaft 31, the upper end of which carries a bevel gear 32 that is in meshwith a similar gear 33carried by power shaft 26. A vent pipe 34 connectsthe upper portion of casing 29 with flue 27. The upper portion of casing29 projects through the upper portion offone end of evaporator 20, andl,the lower end 35' ofl said casing is elongated and projects throughand well beyond the lower portion of said evaporator and depends over ahopper 36 leading to a retort, not shown.

The lower conveyer flight extends the fulll length of the elongated'Aend v35 of casing 2 9'.

The digester 22 is formed of the outer receptacle, `to which saidnumeral ,22' has been applied, an inner receptacleI 37 thatisI spacedtherefrom to provide a steam jacket 38. A perforated lining 39 isprovided for .the inner kreceptacle 37. The ydigester is provided withan outwardly-projeotingj flange .40 at 'itsv upper end which forms a tseat to which the cover plate 41 is fastened.

Plate 4&1 is provided with an opening 42 that a pressure gage 4:6, and asight opening i7 that is sealed by a'sheet of glass 48, .or othertransparent material. A thermometer.' 49 is suspended from the bottomsurface of door 43 in position to be inspected throughthe sightopening47. A transparent receptacle 50 depends from the door 43 and anincandescentA electric lamp, or other source offlight, 51, is disposedin said receptacle to illuminate the interior of the digester.

vertically-arranged centrally-located hollow shaft 52 extends throughthe digesterV 22 vand its upper end projects through the coverplate 41and is reduced yand journaled in a stuffingv box-53. The lower end ofshaft 52 engages a seat 54 in the bottom of vthe inner receptacle 37..Shaft 52 is provided with `a plurality of lateral nipples 52a to "whichupper" and lower hollow horizontal blades.y 55 are coupled.` Blades 55are connected in pairs by the hollow vertical stirrer.

' the same shape as blades 55, Shaft 52 is provided witha centralhorizontal partition` 59 that causes the steam to circulate through thestirrer blades.

The projecting upper end of'shaft 52 is reduced and carries a beveledgear 60 that is engaged Vby a similar gear 62 carried by a shaft l63that is journaled in bracketbearings 64 carried by cover plate'41. Shaft63 has' a belt connection 65 with drive shaft 26.

A steam pipe 66 extends from a source of steam supply, not shown, andhas a branch connection 67 with the lower ortion of the steam jacketv38. f A. steam out et' 68 is provided for jacket 38, saidoutlet beingdisposed opposite and in' a higher plane than the 'l steam inlet of saidjacket and having a pipe connection 69 with the evaporator `20. Acontrolling valve 70 is provided for pipe 69. Steam pipe 66 extendsinto-the upper end of shaft 52, a stufling box 71 being provided toavoid escape of steam.' Outlet pipe 69 has aV branchpipe connection 72-with the basel of shaft 52, saidjpipe -72- being ,equipped with a'controlling valve 73 and at its junction with shaft 52, extends througha stuifing box 74. A drain-pipe 7 5 connects the bottom of steam jacket38with evaporator 20, a trapv76 being carried by said pipe 75 to catchsediment. Pipe is equipped with -a controllingvalve 77 The bottomof dilgester 22 is provided with a cavity 7 8 and aburner 79 projectsthereinto apply heatto the said digeste.

` A discharge opening 80 is formed in .the

bottom of digester 22, and a #controlling door 81 1s provided therefor.A chute 82, formed of telescoping sections, is arranged beneath thedigester and in position to receive' material discharged through opening 8 0. A drain pipe83 is provided for the interior of digester 22 andextends into tank 21. Pipe 83 Vis equipped with a controlling valve 84.'Tank 21 yhas a pipe connection 85v` with the upper portion oftheconveye-r casing 29, saidpipe being equipped l"with a controlling valve86. i

The pressvbox 23 is provided with a plurality ofinternal'laterallysprojecting no-zzles 87 which receive water from'apipe 88 that surrounds said box, said pipe 88 being 1n communicationwithl a supply pipe 89.

, Box 23 is provided with an upper inlet opening 9.0 equipped with asealing door 91, said openlng being in alinementwith chuter82 sothatfyvhen said chute is extended, its free end willenter opening 90 anddeliver material to 'said'box Box 23 is provided with a dischargeopening 92 in the lower portion. Discharge opening 92 extends the entire'length of the press box 23 and a sealing door 92ay is provided for thesame. plunger 'or' ejector k93 in slidable across the bottom of pressbox 23 and enters said box. 7

through an'opening-94 that is opposite open-k ing 92.' Ejector 93includes a bar 95 that is slidable in guides 96 carried by supportingvbeams 97 of one of the standards 16 and box 23, said bar being providedwith upper and' 'lower reeks 98 that are engaged by meshed pinions Lmounted on stub shafts 100. One of said stub shafts also carries adrive-gear 1101 that is in mesh with a worm 102 carried by a shaft 103,the upper end of which is equipped with a beveled gear 104 adapted shaft26. Gears 105 and 106 engage opposite sides of gear 104 and .it will .beclear.

that by manipulatin said gears 105 andl106, the ejector 93 .Wille'projected into 'press box 23 to force material therefrom, or withdrawntherefrom:

A plunger 107 is vertically movable in box 23 and 'is equipped withwater channels to be selectively engaged by .the beveled gears 105 and106' which are, slidable on` 108 that are in communication with aflexible water supply pipe 109, -said channels being equipped withpendent nozzles 110.

Supporting bars 111 extend across the top Y of press box 23 and theexternally-threaded lshafts 112 of plunger 107 are slidabletherethrough.- Bars 111 are arrangedin pairs,

`the members of-which are in spaced superimposed relation, and a pinion1 13 has.. a -hub 114 threaded on each shaft 1 12. Thel pinions 11'3arearranged between the mem.-I

bers of each .palr of bars 111, and saidpin` ions are rotated by a drivegear 115 von a shaft. 116 journaled ina central supporting bar 117 saidshaft `carrylng a beveled Ygear r 125 is slidable on shaft 26 and hasits faces equipped with clutch teeth for selective engagement Vwithpulleys 121 and 122. Pulley 121 has aA straight ,belt connection 126with'pulley 123, and pulley 122 has a crossed belt connection 127 withpulley 124. The described `gearing obviously provides .means for raisingand lowering plunger 107 without affecting the direction of rotation ofshaft 26.

An inclined discharge chute 123 projects.

from box 23 at the discharge opening 90,

and is equipped with a pendent outlet 129- that is over a ltrough 130leading to. a

beater, not shown. Chute 128 has a shaft 131v extending transverselyacross the same and upon which a drumy 132 is mounted, theA periphery ofwhich is provided with shredding teeth 133 that are arranged'instaggered relation. 'Shaft 131 has ajbeltand pulley connection 134 Vwitha pulley 135 mounted ona shaft 136, said shaft 136 carrying a gear 137that is in mesh with a gear 138 carried by shaft 26. The bot-i tom ofbox 23 is `formed ofspaced paralleli bars 139 upon which a screen 140 isplaced. A chute 141 is disposed beneath the bottom of box 23 and extendsinto tank 21. The operation of the pulp making machine is as follows:-The pulp material is ,placed in the digester 22 in which water and theusual chemicals have been placed, the digester and the stirrer bladeshaving been heated by the steam from pipev 66, and the digester 'beingfurther heated by the burner 79. The vblades are then rotated andthepulp material is quickly digested. Vhen the digesting or cookingoperation is finished, the pulp is discharged through opening 80 to thechute 82 and lsaid chute delivers the pulp tothe press box 23. lVhileinbox 23, the pulp is washed by the water from nozzles l87 and 110, andthen compressed into a block by the plunger 107. The liquid squeezedfrom the pulp passes through the bottom of box 23 and by means .of chute141 is discharged int-o tank` 21. When compressed, the block of pulp isforced'from press box 23 by the ejector 93 andfalls into chute 128,where it is shredded by the ,shredder 132, and then delivered to thetrough 130 of the beater.

The liquid contents of digester 22` are delivered to tank 21 by the pipe83 where it mixes with the liquid from box 23 that has beendelivered totank 21 by the chute 141. '"f ank 21 discharges the liquid vinto fromthe chemicals.

the upper end of the conveyer casing 29. Steam enters the evaporator 2Othrough pipes 69 and 75 and thereby heats the casing 29 so t-hat 'thewater will be evaporated The conveyers 30 agitate the liquidan'd dropthe same 'from section to section, thus yfacilitating the evaporation ofthe water, and the valuable chemicals thus separated from the water aredelivered to the retort hopper 36. -The bottom ofl evaporator 20 is 1nthe forni of a lremovable pan 142,'l that facilitates the cleaning ofsaid evaporator. 1

.What 'I claim as my invention is 1. A pulp making machine comprising adigester, a tank, a press, a drain connec- 'tion between the digesterand the tank, a :drain connection lbetween the press and-the tank, anevaporator, a sinuous casing in lsaid evaporator, liquid agitating meansin said casing, a drain connection between said tank and vthe'saidcasing, and means for .su'pplying steam to the evaporator.

2. A pulp making machine comprising a digester, a p ress, a tank, drainconnections between the digester, thepress and the tank, an evaporator,a casing therein, a drain pipe connection bet-Ween the tank and saidcasing, and means for supplying steam to the evaporator.

3. A pulp making machine comprising 'pulp making means, a receiving tankhaving `drain connections with said means for removing th'e l1qu1dtherefrom, an evaporator, means for heating the evaporator, a casing inysaid evaporator, means for delivering the liquid, from the tank to saidcasing, and

means in saidcasing for agtating the liquid i therein.

4. A pulp making machine comprising pulp making means, a tank havingdrain connections with said means for delivering the pulp making liquidto said tank, an evaporator, a sinuous casing therein, liquid agit-atingmeans in said casing, a drain connection between the tank andsaidcasing, and means for supplying heat, to said evaporator.` I

5. A pulp making machine comprising a digester, a press, a tank, meansfor conveying the pulp liquid from said digester and press to said tank,an evaporator for removing water from said liquid, and means forconveying the liquid from said tank to said evaporator.

`6. A pulp making machine comprising evaporator, conveyersin saidcasing, means for supplying heat to said evaporator, pulp makingmechanism', and means for removing the pulp liquid from said mechanismand delivering the' same to said casing.

8. A pulpV making machine comprising evaporator, a sinuous casingtherein hav- .casing means for operating said conveyers,

pulp i'aking" mechanism, means for removii- Y pulp liquid therefrom anddelivering t7 e same to the projecting upper end of sa! casing, meansfor supplying steam to saai evaporator, an outlet flue for saidevaporator provided with baffle plates, and

'a ventconnection between the casing and said flue.

j ,9.A pulp making machine comprising a su ortin yframe adigester'carried there'- by and provided with a discharge'outlet, apress provided with an inlet opening, a chute for conducting materialfrom the discharge'opening ofthe digester to the inlet opening of thepress, a discharge outlet for the press, an ejector for said press, achute at the discharge outlet of said press, a shredderin said chute, anevaporator, and means for removing pulp liquid from the press boX anddelivering the same to the said evaporator. l

10. Apulp making machine comprising a digester provided with a steamjacket, hollow s'tirrers in said digester, means for supplying steam tosaid jacket and stirrer, means for rotating said stirrers, a press incommunication with said digester, a shredder receiving the pulp fromsaid press, an evaporator, fmeans for delivering steam y from saidjacket. and stirrers tosaid evaporator, la casing in said evaporator,and meansl for delivering pulp liquid from the digester and press tosaidcasing.

11. A pulp making machine comprisinga digester, a press, meansfor.delivering maA terial from said digester to said press, nozzles in saidpress, means for supplying water to said nozzles, a plunger providedwith water channels, nozzlesn for said channels, means for 4supplyingwater to said channels, means for operating said plunger, an ejector forremoving material from said press, means for operating the ejector, xadischarge chute for said press, a shredder in said chute, an evaporator,and means for delivering pulp liquid from said'digester l and presstosaid evaporator.

12. A. pulp making machine comprising a digester formed of an inner andan outer1 receptacle arranged in spaced relation to provide asteamjacket, the bottom of said digester beingl provided With a cavity,a

rator, a press, a casing in said evaporator, and means for removing pulpliquid from said digesterv and press and delivering the Vsame to saidcasing.

13. A pulp making machine comprising a digester, a press, a chute formedof telescoping sections for delivering material from said digester` tosaid "press, means for ejecting material from said-press, a chutereceiving the material ejected from said press, a shredder in saidchute, an evaporator, and means for delivering pulp liquid from thedigester and press to said evaporator.`

14'. A pulp making machine comprising a frame, a power shaft journaledtherein,

means for operating said shaft, a digester carried lby said frame,stirrers therein, vmeans actuated by said shaft for operating saidstirrers, a press, means for delivering pulp from thel digester to thepress, a plunger in said press, means actuated by the shaft foroperating -the plunger, an ejector for said press, means actuated bysaid shaft for operating the ejector,'a chute receiving the ejected'material from said press, a shredder in -s'aid chute, `means actuated bysaid shaft for operating the shredder, an

evaporator, means 'for supplying steam thereto, a casing, means' fordelivering pulp-1 liquid from said digester and press to said casing,agitators in said casing, and means actuated by said .shaft foroperating said. -agitators V u 15 A Pulp making machine comprising' adigester, a cover therefor providedwitli an inlet opening, a door forsaid `*opening provided with a sight opening, a transparent cover' forsaid sight opening, -a thermometer suspended beneath said transparentcover, a transparent cavity in said door, i

illuminating means in saidc'avity, a press, meansfor delivering materialfrom said digester to said press, a shredder receiving material fromsaid press, an. evaporator, and means for delivering pulp material fromsaid digester and press to said evaporator.`

16. A pulp making machine comprising' a digester provided with adischarge outlet,

va press provided with an inlet opening, a

chute for delivering lmaterial from the outlet of the digester to theinlet of the press,

,a plunger in said press, an ejector slidable across the bottom of saidpress, a discharge .chute for said press, a shredder in said chute, anevaporator, and means'for delivering vpulp liquid. from said digesterand press to said evaporator.

17. A pulp making machine. comprising digesting means, compressingmeans, a tank having drain connections with said digesting andcompressing means, an evaporator.

In testimony whereof I aiix my signature in presence of two Witnesses.

WALTER H. JUDSON.

Witnesses:

J. D. RICE, lH. C. SCHROEDER.

